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Library and microservice for looking up inside the IANA Service Names And Port Numbers Registry records. Written in Kotlin. It supports registering various datasources (IANA, Nmap Services, ...) and allows to lookup service names from port numbers, or vice-versa.
This library is an in-memory database that allows to lookup IANA records based upon certain filters (e.g., service names, ports, transport protocols, ...). It is very lightweight, and allows for million of lookups per second.
By default, the database is automatically fetched from here. But you can optionally provide your own database and parser by specifying a file or a URL where the data can be downloaded from. The server supports non-interrupting updates and can update the database while it is running.
Service names and port numbers are used to distinguish between different services that run over transport protocols such as TCP, UDP, DCCP, and SCTP.
And GraphQL is a data query language allowing clients to define the structure of the data required, and exactly the same structure of the data is returned from the server. It is a strongly typed runtime which allows clients to dictate what data is needed.
- Live Server on Fly.io PaaS: https://service-names-port-numbers.fly.dev/graphiql
- Download IANA Database: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
A live running version of the GraphQL API is available on Fly.io: https://service-names-port-numbers.fly.dev/graphiql
Note that this API operates entirely from memory, and auto-updates itself every 12 hours.
The library is published on Maven Central. So importing it should be straightforward.
<dependency>
<groupId>org.rm3l</groupId>
<artifactId>service-names-port-numbers-library</artifactId>
<version>0.12.2</version>
</dependency>implementation 'org.rm3l:service-names-port-numbers-library:0.12.2'This shows the basic usage of the library. Opening a database and querying.
Example with Kotlin:
import org.rm3l.servicenamesportnumbers.ServiceNamesPortNumbersClient
import org.rm3l.servicenamesportnumbers.domain.Record
import org.rm3l.servicenamesportnumbers.domain.RecordFilter
import org.rm3l.servicenamesportnumbers.domain.Protocol
fun main(args: Array<String>) {
val serviceNamesPortNumbersClient = ServiceNamesPortNumbersClient
.builder()
//You may customize other parts here
.build()
var records = serviceNamesPortNumbersClient.query(443L) //records is a List<Record>
//Do something with the records
//To benefit from caching, it is recommended you reuse the client instance
records = serviceNamesPortNumbersClient.query("http")
//You may pass in complex filters
records = serviceNamesPortNumbersClient.query(
RecordFilter(
ports=listOf(80L, 443L, 2375L),
protocols=listOf(Protocol.TCP)))
//Hot-update the database
serviceNamesPortNumbersClient.updateDatabase(
oldDatabase = File("/path/to/my/old/iana-database.xml"),
newDatabase = File("/path/to/my/local/iana-database.xml"))
}Example with Java:
import org.rm3l.servicenamesportnumbers.ServiceNamesPortNumbersClient;
import org.rm3l.servicenamesportnumbers.domain.*;
import java.util.*;
public class MyService {
public static void main(String... args) {
final ServiceNamesPortNumbersClient serviceNamesPortNumbersClient = ServiceNamesPortNumbersClient
.builder()
//You may customize other parts here
.build();
List<Record> records = serviceNamesPortNumbersClient.query(443L);
//Do something with the records
//To benefit from caching, it is recommended you reuse the client instance
records = serviceNamesPortNumbersClient.query("http");
//You may pass in complex filters
records = serviceNamesPortNumbersClient.query(
new RecordFilter(
null,
Collections.singletonList(Protocol.TCP),
Arrays.asList(80L, 443L, 2375L)));
//Hot-update the database
serviceNamesPortNumbersClient.updateDatabase(
(new File("/path/to/my/old/iana-database.xml"),
new File("/path/to/my/local/iana-database.xml"));
}
}You can build the project with the Gradle Wrapper:
./gradlew buildYou will then find the artifacts in the sub-projects build directories:
library/build/libs: the library codeapplication/build/libs: Spring-Boot sample application, representing the server app
Running the app is as simple as issuing the following command:
java -jar ./application/build/libs/service-names-port-numbers-app-0.12.2.jarThen navigate to http://localhost:8080/graphiql to start exploring the GraphQL API.
Visit the application/src/main/resources/application.properties file
to see which JVM options you can pass to the application.
For example, to make the service listen on port 8888 instead, run:
java \
-Dserver.port=8888 \
-jar ./application/build/libs/service-names-port-numbers-app-0.12.2.jarVisit the http://localhost:8080/graphiql to start exploring the GraphQL schema and get completion hints with your queries.
Or send a POST request to the /graphql API endpoint to perform requests.
Example with curl:
curl -k -i -X POST http://localhost:8080/graphql \
-H'Content-Type: application/json' \
-d '{"query":"{records(filter: {ports: [80, 443, 2375], protocols: [TCP]}) {serviceName portNumber description assignmentNotes}}"}'
HTTP/1.1 200
X-Application-Context: application
Content-Type: application/json;charset=UTF-8
Content-Length: 481
Date: Sun, 03 Dec 2017 22:22:11 GMT
{
"data": {
"records": [
{
"serviceName":"http",
"portNumber":80,
"description":"World Wide Web HTTP",
"assignmentNotes":"Defined TXT keys: u=<username> p=<password> path=<path to document>"
},
{
"serviceName":"https",
"portNumber":443,
"description":"http protocol over TLS/SSL",
"assignmentNotes":null
},
{
"serviceName":"docker",
"portNumber":2375,
"description":"Docker REST API (plain text)",
"assignmentNotes":null
}
]
}
}
A Docker repository with the microservice can be found here: https://hub.docker.com/r/rm3l/service-names-port-numbers/
To fetch the docker image, run:
docker pull rm3l/service-names-port-numbersTo run the server with the default options and expose it on ports 8080 (and port 8081, for the management endpoints), run:
docker run -p 8080:8080 -p 8081:8081 --rm rm3l/service-names-port-numbersThen open http://localhost:8080/graphiql on your favorite browser, to start exploring the GraphQL API.
(If you use this library and/or the microservice, please drop me a line at <[email protected]> (or again, fork, modify this file and submit a pull request), so I can list your app(s) here)
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- Armel Soro
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